1、Professional and practical design, beautiful appearance, easy to carry and use. 2、The whole is processed by heat treatment, with high hardness and durability. 3、Used for the opening of wood, aluminum composite panels, gypsum board, thin iron, plastic, etc. 4、Made of high quality materials with high hardness, wear resistance. 5、Suitable for wood board, aluminum-plastic board, gypsum board, thin iron board, plastic Features: 1. Professional and practical design, beautiful appearance, easy to carry and use. 2. The whole is processed by heat treatment, with high hardness and durability. 3. Used for the opening of wood, aluminum composite panels, gypsum board, thin iron, plastic, etc. 4. Made of high quality materials with high hardness, wear resistance. 5. Suitable for wood board, aluminum-plastic board, gypsum board, thin iron board, plastic   Specification: Hole Saw: 54mm Flat Drill: 7/8 (22 mm) Hole Saw Size: Approx. 54mm / 2.1in                  Depth of Work: Approx. 25mm / 1.0in Drill Bit Size: Approx. 9 * 43 * 6mm / 0.4 * 1.7 * 0.2in              Whole Length: Approx. 89mm / 3.5in Flat Drill Size: Approx. 6.35 * 55 * 15 * 22mm / 0.3 * 2.2 * 0.6 * 0.9in                Whole Length: Approx. 150mm / 5.9in   Package List: 1* Hole Saw 1* Drill Bit 1* Flat Drill